| Carbon Isotopic Values of Individual N—Alkanes in Pyrolysates of Algae |
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| 引用本文： | 周文,吴庆余,等.Carbon Isotopic Values of Individual N—Alkanes in Pyrolysates of Algae[J].中国地球化学学报,2000,19(2):181-185. |
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| 作者姓名： | 周文 吴庆余 |
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| 作者单位： | [1]DepartmentofBiologicalScieneceandTechnology,NanjingUniversity,Nanjing210093,China [2]DepartmentofBiologicalScienceandTechnoology,TsinghuaUniversity,Beijing100084,China |
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| 摘 要： | This paper presents the carbon isotopic values of individual n-alkanes in pyrolysates of algae,which are widely spread in marine and lacustrine environments.The carbon isotopic values of n-alkanes originated from different algal precursors vary greatly,and those of n-alka nes orginated from C.protothecoides,S.sp PCC 6803 and I.Galbana are even heavier than from higher plants,n-alkanes with different carbon numers derived from the sme organism may stem from different biomacromolecules.The dominant product nC31 diene yielded at 300℃ or lower temperature also is different from n-alkanes yielded at the same thermal evolution phase with respect to their origin.The catalysis of mineral components in limestone may lead to a lighter carbon isotope composition of n-alkanes.
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| 关 键 词： | 碳同位素 藻类 热解物 烷烃 海洋环境 湖泊环境 |
Carbon isotopic values of individual n-alkanes in pyrolysates of algae |
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| Wen Zhou,Qingyu Wu,Ruiyong Wang,Junbiao Dai,Guoying Sheng,Jiamo Fu.Carbon isotopic values of individual n-alkanes in pyrolysates of algae[J].Chinese Journal of Geochemistry,2000,19(2):181-185. |
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| Authors: | Wen Zhou Qingyu Wu Ruiyong Wang Junbiao Dai Guoying Sheng Jiamo Fu |
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| Institution: | (1) WA Organic and Isotope Geochemistry Centre Department of Applied Chemistry, Curtin University of Technology, Perth, WA, 6845, Australia;(2) Research School of Earth Sciences, The Australia National University, Building 61, Mill Road, 0200 Canberra, ACT, Australia |
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| Abstract: | This paper presents the carbon isotopic values of individual n-alkanes in pyrolysates of algae, which are widely spread in marine and lacustrine environments. The carbon isotopic values of n-alkanes originated from different algal precursors vary greatly, and those of n-alkanes originated fromC.protothecoides, S. sp PCC 6803 andI.Galbana are even heavier than from higher plants, n-alkanes with different carbon numbers derived from the same organism may stem from different biomacromolecules. The dominant product nC31 diene yielded at 300°C or lower temperature also is different from n-alkanes yielded at the same thermal evolution phase with respect to their origin. The catalysis of mineral components in limestone may lead to a lighter carbon isotope composition of n-alkanes. |
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